JP4094326B2 - Emergency unlocking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an emergency unlocking device that can be unlocked without using a key.
[0002]
[Prior art]
It is desirable that emergency doors and the like can be normally locked due to security problems, but it is desirable that they can be easily unlocked without using a key in case of an emergency such as a fire. Conventionally, there is an emergency unlocking device as a locking device used for such an emergency door. This emergency unlocking device includes a cylinder and an emergency opening handle.
[0003]
In an emergency unlocking device, normally, the cylinder is rotated by a key to operate the lock box unlocking mechanism provided in the emergency door, and the dead bolt is moved forward and backward from the lock box in the same way as a normal locking device. The emergency door can be locked and unlocked. On the other hand, in the event of an emergency such as a fire, the emergency opening handle that is usually covered is exposed and operated to rotate the input member (so-called dharma) of the lock box directly without using the key, and dead bolt It was possible to perform the unlocking operation of retracting the inside of the lock box.
[0004]
[Problems to be solved by the invention]
However, the conventional emergency unlocking device can transmit both the unlocking operation force and the locking operation force to the lock box by the emergency opening handle. After locking, when the emergency opening handle was operated due to an erroneous operation or the like, the emergency doors and the like were locked again.
[0005]
In particular, in the event of an emergency such as a fire, quick evacuation is the most important for safety. Therefore, it is not preferable that re-locking is possible due to such an erroneous operation. That is, in an emergency, it is desirable that the unlocked state be maintained when unlocked using the emergency opening handle.
[0006]
The present invention has been made in view of the above situation, and provides an emergency unlocking device that can prevent re-locking due to an erroneous operation at the time of emergency opening, and can keep the opened state. The purpose is to improve reliability.
[0007]
[Means for Solving the Problems]
Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The emergency unlocking device 71 according to claim 1 of the present invention includes a cylinder cylinder 5 that supports a cylinder 7 on the inside,
A connector 23 for connecting the rotatable rotating piece 17 provided in the cylinder 7 and the lock mechanism;
A cylindrical emergency opening handle 41 rotatably attached to the cylinder cylinder 5;
A connector direct connection pin 35 provided on the connector 23 and projecting radially outward;
A latch arm 51 is provided on the inner periphery of the emergency opening handle 41 so as to be movable in the axial direction, and the latch arm 51 is hooked on the connector direct connection pin 35 so that the cylinder cylinder 5 is not engaged. On the other hand, the rotation of the emergency opening handle 41 releases the latching of the latching arm 51 to the connector direct connection pin 35, and the urging means 53 protrudes in the axial direction to engage with the cylinder cylinder 5. A plate 49;
It is characterized by comprising.
[0008]
In this emergency unlocking device 71, the emergency opening handle 41 is rotated, and the connector 23 is directly rotated via the connector direct connection pin 35 that is hooked on the reverse rotation prevention plate 49, so that the lock mechanism portion in the lock box 3 is directly unlocked. In this case, when the emergency opening handle 41 is rotated again to lock, the latching arm 51 of the reverse rotation prevention plate 49 is separated from the connector direct connection pin 35, and the reverse rotation prevention plate 49 is not latched by the connector direct connection pin 35. The Then, the reverse rotation prevention plate 49 is moved in the axial direction by the urging means 53, engages with the cylinder cylinder 5, and prevents further rotation of the emergency opening handle 41. Thereby, re-locking by the emergency opening handle 41 is prevented.
[0009]
The emergency unlocking device 71 according to claim 2 is the emergency unlocking device 71 according to claim 1,
A pair of anti-reverse rotations are formed on the inner periphery of the emergency opening handle 41 at each position corresponding to the end of rotation in the rotation range of locking and unlocking of the cylinder 7 so that the tips of the latching arms 51 face each other. Plates 49 and 49 are disposed, which is characterized in that
[0010]
In this emergency unlocking device 71, re-locking is prevented by changing the position of the connector direct connection pin 35 regardless of the rotation direction of the rotation operation for locking and unlocking the cylinder 7. In other words, the emergency opening handle 41 can be obtained without a left-right hand.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an emergency unlocking device according to the present invention will be described in detail with reference to the drawings.
1 is a cross-sectional view of an emergency unlocking device according to the present invention, FIG. 2 is a perspective view showing a top view of a cylinder tube as (a), a bottom view is shown as (b), and FIG. 3 is a rear view of a connector (a ), A perspective view showing the front view as shown in (b), FIG. 4 is a perspective view showing the top view of the emergency opening handle as (a), a bottom view as shown in (b), and FIG. 5 is the emergency solution shown in FIG. FIG. 6 is a cross-sectional view of the click mechanism provided in the emergency unlocking device of FIG. 1, FIG. 7 is a cover installation state of the emergency unlocking device shown in FIG. It is the front view which represented the removal | desorption state to (b).
[0012]
As shown in FIG. 1, a lock box 3 is built in the emergency door 1. The lock box 3 is provided with a lock mechanism (not shown), and when an operation turning force is input to an input member (so-called dharma) (not shown), a dead bolt (not shown) is advanced and retracted to lock and unlock the emergency door 1. Make it possible. A cylinder cylinder 5 that cannot rotate with respect to the lock box 3 is attached to the emergency door 1. The cylinder cylinder 5 may be either one fixed to the emergency door 1 or the lock box 3.
[0013]
The cylinder cylinder 5 supports a cylinder 7 on the inner side. As shown in FIG. 2, an inner cylinder exposing hole 9 is formed at the tip of the cylinder cylinder 5, and the inner cylinder 11 of the cylinder 7 is exposed from the inner cylinder exposing hole 9. The cylinder 7 has a key insertion hole 13 (see FIG. 7) on the exposed end surface of the inner cylinder 11. The inner cylinder 11 is rotatable by inserting a key (not shown) into the key insertion hole 13 so that the shear lines of a plurality of tumbler pins provided coincide with the boundary between the inner cylinder 11 and the outer cylinder 15. The rotation of the inner cylinder 11 which can be rotated in this way is output to a rotating piece 17 protruding from the rear end of the cylinder 7. The rotating piece 17 is provided to be rotatable with respect to the cylinder 7. That is, the rotating piece 17 is rotatable without being interlocked and connected to the inner cylinder 11 and the outer cylinder, and the tip of the key inserted into the key insertion hole 13 is locked, so It rotates in conjunction with the cylinder 11.
[0014]
A reverse rotation prevention protrusion 19 shown in FIG. 2B is fixed to the lower part of the outer peripheral rear end of the cylinder tube 5. A long guide hole 21 in the circumferential direction is formed in the rear end portion of the cylinder cylinder 5. As shown in FIG. 1, the cylinder cylinder 5 has a cylindrical connector 23 provided behind the cylinder 7 in a rotatable manner.
[0015]
As shown in FIG. 3, a diametric insertion groove 25 into which the rotating piece 17 of the cylinder 7 is fitted is formed in the front end surface of the connector 23. Further, a cross-shaped output shaft 27 is provided on the rear end surface of the connector 23 so as to be engaged with a dharma (not shown) constituting the lock mechanism portion in the lock box 3 so as not to be relatively rotatable. The connector 23 is prevented from dropping from the rear end of the cylinder cylinder 5 by a fixing ring 31 fitted in a fixing groove 29 formed on the inner periphery of the rear end of the cylinder cylinder 5. The connector 23 works to transmit the rotational operation force of the cylinder 7 to the dharma of the lock box 3.
As shown in FIG. 1, a spacer 33 is provided in the gap between the cylinder 7 and the connector 23 to support the connector 23 when the connector 23 rotates with respect to the cylinder 7.
[0016]
As shown in FIG. 1, a connector direct connection pin 35 is provided on the connector 23 so as to protrude outward in the radial direction. The connector direct connection pin 35 protrudes from the outer peripheral surface of the cylinder cylinder 5 through the guide hole 21 of the cylinder cylinder 5. Therefore, when the connector 23 rotates, the connector direct connection pin 35 reciprocates in the circumferential direction of the cylinder cylinder 5 along the guide hole 21.
[0017]
A cylinder decorative cylinder 39 is attached to the tip of the cylinder cylinder 5 protruding from the emergency door 1. A cylindrical emergency opening handle 41 is extrapolated on the outer periphery of the cylinder cylinder 5. As shown in FIG. 4, the emergency opening handle 41 has a substantially triangular plate-shaped finger hanging plate 43 protruding from the upper and lower surfaces of the front end of the outer periphery.
[0018]
Further, the emergency opening handle 41 has mounting grooves 44, 44 for mounting a later-described reverse rotation preventing plate formed on the inner peripheral surface. Furthermore, a long through hole 45 in the circumferential direction is formed in the lower portion of the rear end of the emergency opening handle 41. In the present embodiment, the connector direct connection pin 35 protruding from the guide hole 21 of the cylinder cylinder 5 also enters the through hole 45. Since the connector direct connection pin 35 is required to be engaged with a later-described reverse rotation prevention plate, it is not necessarily required to protrude from the through hole 45 of the emergency opening handle 41.
[0019]
A reverse rotation prevention plate (stopper board) 49 shown in FIG. 5 that is movable in the axial direction is provided on the inner periphery of the emergency opening handle 41. The stopper board 49 has a latching arm 51 protruding in the circumferential direction orthogonal to the axis, and is formed in a substantially T shape. In addition, a coil spring 53 as an urging means is provided inside the emergency opening handle 41, and the coil spring 53 urges the stopper board 49 in a direction protruding from the rear end side of the emergency opening handle 41.
[0020]
As shown in FIG. 5, the stopper board 49 hooks the latch arm 51 on the connector direct connection pin 35 protruding from the guide hole 21 of the cylinder cylinder 5, thereby preventing the reverse rotation projection 19, i.e., the non-return to the cylinder cylinder 5. The engaged state is maintained. On the other hand, when the emergency opening handle 41 is rotated in the direction of arrow a in FIG. 5, the stopper board 49 and the coil spring 53 move together with the emergency opening handle 41, and the hook of the latching arm 51 with respect to the connector direct connection pin 35 is released. The
As a result, the stopper board 49 protrudes from the rear end side of the emergency opening handle 41 by the biasing force of the coil spring 53 and engages with the reverse rotation prevention protrusion 19 to prevent the emergency opening handle 41 from rotating in the same direction. ing.
[0021]
As shown in FIG. 6, a recess 55 is formed on the outer periphery of the cylinder cylinder 5, and a click pin 57 having a substantially spherical tip is provided in the recess 55. A spring 59 is disposed between the bottom surface of the recess 55 and the click pin 57, and the spring 59 urges the click pin 57 to protrude from the outer periphery of the cylinder cylinder 5.
On the other hand, a recess 60 into which the tip of the click pin 57 enters is formed on the inner peripheral surface of the emergency opening handle 41. That is, the emergency opening handle 41 is prevented from turning below a predetermined rotational moment. Thereby, even if the connector direct connection pin 35 moves, the co-rotation of the emergency opening handle 41 is prevented.
[0022]
In this embodiment, as shown in FIG. 9 (d), the pair of stopper boards 49, 49 are arranged on the inner periphery of the emergency opening handle 49 so that the lines parallel to the axis on the outer peripheral surface of the cylinder cylinder 5 are symmetrical. Has been established. These stopper boards 49, 49 are symmetrical so that the tips of the respective latching arms 51, 51 are opposed to each other, and each position corresponding to the end of rotation in the rotation range of locking and unlocking of the cylinder 7, that is, in this embodiment In this embodiment, the cylinder 7 is locked and unlocked in a range of about 90 °, so that it is provided at both end positions of the through holes 45 of the emergency opening handle 41 formed long in the circumferential direction corresponding to this rotation range. It is done. With these stopper boards 49, 49, in the emergency unlocking device 71 of the present embodiment, the position of the connector direct connection pin 35 is whatever the rotational direction of the rotational operation for locking and unlocking the cylinder 7. It is possible to obtain an emergency unlocking device that can prevent re-locking by changing the above, that is, it is possible to obtain a configuration without the left and right sides as the emergency opening handle 41.
[0023]
As shown in FIG. 1, a base plate 69 having locking plates 61 and 61 is fixed to the surface of the emergency door 1 above and below the emergency opening handle 41. A locking claw 65 of a box-shaped cover 63 that covers the emergency opening handle 41 is detachably locked to the locking plates 61 and 61.
Therefore, as shown in FIG. 7, when the cover 63 is attached to the emergency door 1, the emergency opening handle 41 is covered, and only the tip of the cylinder 7 is exposed from the cylinder exposing hole 67 of the cover 63. .
On the other hand, in the event of an emergency such as a fire, by pulling, for example, the lower part of the cover 63, the locking plates 61, 61 and the locking claws 65 are unlocked, and the cover 63 is removed, so that FIG. As shown, an emergency opening handle 41 is exposed.
[0024]
Next, the operation of the emergency unlocking device 71 configured as described above will be described.
FIG. 8 is an operation explanatory view showing the rear view of the emergency unlocking device before the emergency unlocking operation in (a) and the side view in the b direction of (a) in (b), and FIG. 9 is the emergency unlocking in the emergency unlocked state. FIG. 10 is an operation explanatory view showing the back view of the lock device in (a), (b), (c), (d), and (e) in (b), (c), (d), and (e). (A), (b) and (c) side view of the emergency unlocking device in a state where the unlocking cannot be performed, and (b), (c). It is operation | movement explanatory drawing which represented the back view of the emergency unlocking apparatus in a locking return state to (a) and b, c direction side view of (a) to (b), (c).
[0025]
As shown in FIG. 8, before the emergency unlocking operation, the stopper board 49 is urged by the coil spring 53, but since the latching arm 51 is caught by the connector direct connection pin 35, It does not protrude from the edge. Therefore, in this state, the stopper board 49 can pass without engaging with the reverse rotation preventing projection 19.
[0026]
In this state, when the emergency opening handle 41 is turned in the direction of arrow b in FIG. 9, the connector direct connection pin 35 is pushed by the stopper board 49 attached to the inner periphery of the emergency opening handle 41 and moved along the guide hole 21. The connector 23 is rotated in the same direction. Thereby, the dharma in the lock box 3 is directly unlocked.
[0027]
As shown in FIG. 10, when the emergency opening handle 41 is operated and the emergency unlocking device 71 is unlocked, when the emergency opening handle 41 is reversely rotated to return to the locked state, it is caught by the connector direct connection pin 35. The retaining arm 51 of the stopper board 49 that has been in a state of being moved moves away from the connector direct connection pin 35 and comes off. As a result, the stopper board 49 is released from being locked by the connector direct connection pin 35, protrudes from the rear end of the emergency opening handle 41 by the biasing force of the coil spring 53, engages with the reverse rotation prevention protrusion 19, and Reversal is prevented. In this way, the relocking operation using the emergency opening handle 41 in an emergency is prevented.
[0028]
Further, when locking and returning is performed by a key (joint key) or thumb turn, the connector direct connection pin 35 moves with the latching arm 51 of the stopper board 49 placed thereon as shown in FIG. The tip of the stopper board 49 does not engage with the reverse rotation preventing projection 19, and the connector direct connection pin 35 moves along the guide hole 21.
[0029]
As described above, according to the emergency unlocking device 71 described above, the emergency opening handle 41 is rotated, and the connector 23 is directly rotated via the connector direct connection pin 35 hooked on the stopper board 49. When the mechanism is directly unlocked and the emergency opening handle 41 is rotated again to lock the mechanism, the latching arm 51 of the stopper board 49 is separated from the connector direct connection pin 35 and the connector direct connection pin 35 latches the stopper board 49. Is released.
Then, the stopper board 49 is moved in the axial direction by the coil spring 53 and engages with the reverse rotation prevention protrusion 19 of the cylinder cylinder 5. As a result, the emergency opening handle 41 can be prevented from rotating further, and relocking by the emergency opening handle 41 can be prevented.
[0030]
Further, by arranging the symmetrical stopper boards 49, 49, the position of the connector direct connection pin 35 can be obtained regardless of the rotation direction of the rotation operation for locking and unlocking the cylinder 7. It is possible to obtain an emergency unlocking device capable of preventing re-locking by changing the above, that is, to obtain a versatile configuration with no right and left hand as the emergency opening handle 41.
[0031]
【The invention's effect】
As described above, according to the emergency unlocking device of the first aspect of the present invention, the cylinder is supported on the inner side of the cylinder cylinder, and the connector is directly connected to the connector that connects the rotating piece of the cylinder and the lock mechanism. A pin is projected, and a cylindrical emergency opening handle is pivotally attached to the cylinder cylinder, and the reverse rotation prevention plate that engages the cylinder cylinder by releasing the latch to the connector direct connection pin by the rotation of the emergency opening handle. When unlocked using the emergency opening handle, if you try to lock the emergency opening handle again, the anti-reverse plate engages the cylinder cylinder and prevents further rotation of the emergency opening handle. And relocking with the emergency opening handle can be prevented. Accordingly, the emergency unlocking device can be prevented from being re-locked due to an erroneous operation or the like at the time of emergency opening, and the open state can be maintained, and the reliability of the emergency unlocking device can be improved.
[0032]
According to the emergency unlocking device of claim 2, the symmetrical shape in which the tips of the latching arms face each other on the inner periphery of the emergency opening handle at each position corresponding to the rotation end in the rotation range of the cylinder locking and unlocking. Since the pair of anti-reverse plates formed on is arranged, the re-locking can be performed by changing the position of the connector direct connection pin regardless of the rotation direction of the rotation operation for locking and unlocking the cylinder. It is possible to obtain an emergency unlocking device capable of preventing the above-mentioned problem, that is, it is possible to obtain a configuration without a left-right hand as an emergency opening handle. As a result, a versatile emergency unlocking device can be obtained.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an emergency unlocking device according to the present invention.
FIG. 2 is a perspective view of a cylinder cylinder in a top view (a) and a bottom view (b).
FIGS. 3A and 3B are perspective views showing the connector in a rear view (a) and a front view in (b), respectively.
FIG. 4 is a perspective view of the emergency opening handle as viewed from above (a) and from below (b).
FIG. 5 is a perspective view of essential parts of the emergency unlocking device shown in FIG. 1;
6 is a cross-sectional view of a click mechanism provided in the emergency unlocking device of FIG. 1. FIG.
7 is a front view of the emergency unlocking device shown in FIG. 1 showing a cover attachment state (a) and a cover removal state (b). FIG.
FIGS. 8A and 8B are operation explanatory views showing a rear view of the emergency unlocking device before an emergency unlocking operation, and FIG.
FIG. 9 is a rear view of the emergency unlocking device in an emergency unlocked state, and (b), (c), (d), (e FIG.
FIGS. 10A and 10B are operation explanatory views showing a rear view of the emergency unlocking device in a state where the lock cannot be restored, and FIGS.
FIG. 11 is an operation explanatory view showing the rear view of the emergency unlocking device in the locked return state with the key / thum turn as shown in (b) and (c) in (b) and (c) side views in (b) and (c). is there.
[Explanation of symbols]
5 ... Cylinder cylinder 7 ... Cylinder 17 ... Rotating piece 23 ... Connector 35 ... Connector direct connection pin 41 ... Emergency opening handle 49 ... Reverse rotation prevention plate (stopper board)
51 ... Hanging arm 53 ... Biasing means (coil spring)
71 ... Emergency unlocking device

Claims (2)

A cylinder that supports the cylinder on the inside;
A rotatable turning piece provided in the cylinder and a lock mechanism, and a connector provided in the cylinder tube ;
A cylindrical emergency opening handle that is rotatably inserted into the cylinder cylinder;
Projecting radially outward is provided on the connector, and a connector connected directly pins penetratingly arranged in the cylinder tube to be longer bored in the circumferential direction a guide hole,
It is provided on the inner periphery of the emergency opening handle so as to be movable in the axial direction, and has a latching arm protruding perpendicularly to the movement direction, and is provided with a biasing means, in the rear end direction of the emergency opening handle. is biased, when hooked the latching arm to the connector directly connected pin does not protrude from the rear end of the very open handle, while retaining the disengaged state to the cylinder barrel, the very open a reverse rotation prevention plate which engages with the cylinder barrel when the protruding in the axial direction by releasing to the biasing means engaging said latching arm to the connector directly connected pin by rotation of the handle,
An emergency unlocking device characterized by comprising: The emergency unlocking device according to claim 1,
A pair of anti-reverse plates are formed on the inner circumference of the emergency opening handle at each position corresponding to the end of rotation in the rotation range of locking and unlocking of the cylinder. An emergency unlocking device characterized by being provided.

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